Absolute Filters
Elements of the final filtration stage in ventilation systems

The classification of clean rooms and other controlled work environments is specified in demanding technical standards. Therefore the filters used there must meet the highest standards of performance and effectiveness.

Filtration class

H10, H11, H12, H13, H14, U15 acc. standards:

  • EN 1822:2009

Standard dimensions

Frame dimensions (width x height):

  • 305 x 305 mm

  • 305 x 610 mm

  • 457 x 457 mm

  • 610 x 610 mm

Frame thickness:

  • 68, 78, 150, 292 mm

Material

Waterproof paper is made from high efficiency fibreglass, formed of micro-fibreglass wrap and a mixture of synthetic fibres.

Construction

Filter made from pleated materials is called minipleat. Depending on the type, it can be separated by an aluminium foil separator or cotton threads separator, or glue. Filter medium is placed in an MDF frame (wooden board), made from aluminium or galvanised sheet. Normally, from the front of the frame an elastic polyurethane seal is placed.

Technical data absolute filters

FILTER CLASS
H13
H13
H13
H13
H13
H13
Frame thickness
mm
H13
78
H13
150
H13
292
Minipleat thickness
mm
H13
58
H13
120
H13
120
Type 610 x 610 mm
m³/h
H13
670
H13
1920
H13
1920
Type 305 x 610 mm
m³/h
H13
335
H13
950
H13
950
Type 305 x 305 mm
m³/h
H13
155
H13
440
H13
440
Initial pressure drop
Pa
H13
150
H13
250
H13
250
Recommended final pressure drop
Pa
H13
450
H13
550
H13
550
Max. permissible operating temperature
°C
H13
80
H13
80
H13
80

Application

Used as final stage filters in air-conditioning and ventilation systems. Used in many sectors such as: medicine, chemical industry, pharmacological industry and many others where high air quality is required.

Air conditioning filters of BWF Envirotec, Poland at a glance

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